Pathogen



any disease-producing agent, especially a virus, bacterium, or other microorganism.
Contemporary Examples

When I started the job in 1992 it was well established as a pathogen, and that was the end of pink burgers for you and for me.
Be Afraid of Your Food: An Epidemiologist’s Sensible Advice Amanda Kludt March 15, 2013

This last capability of the virus appears to be how the pathogen is spreading between farms in different states.
Aporkalypse Now: Pig-Killing Virus Could Mean the End of Bacon Carrie Arnold August 19, 2014

Most human infections are contracted by inhaling, ingesting, or inoculating a pathogen.
This Amoeba Eats Your Brain: Naegleria Fowleri Rattles New Orleans Kent Sepkowitz September 22, 2013

The bacterium is technically a pathogen, so the USDA looks at it.
Plants That Glow in the Dark Spark Heated Debate Josh Dzieza August 17, 2013

“The mosquito is really wily, but the pathogen is even more wily,” she says.
Mosquitoes Love Some People More and Science Wants to Know Why Josh Dzieza August 5, 2013

The 2001 anthrax letter attacks were carried out with 15 grams of the pathogen.
The Coming Bioattack Stephan Talty June 4, 2009

Historical Examples

pathogen′esis, Pathog′eny, mode of production or development of disease.
Chambers’s Twentieth Century Dictionary (part 3 of 4: N-R) Various

pathogenet′ic, pathogen′ic, Pathog′enous, producing disease.
Chambers’s Twentieth Century Dictionary (part 3 of 4: N-R) Various

noun
any agent that can cause disease
n.

1880, a back-formation from pathogenic.

pathogen path·o·gen (pāth’ə-jən)
n.
An agent that causes disease, especially a living microorganism such as a bacterium, virus, or fungus.
pathogen
(pāth’ə-jən)
An agent that causes infection or disease, especially a microorganism, such as a bacterium or protozoan, or a virus. See Note at germ.
pathogen [(path-uh-juhn)]

A disease-causing agent. Microorganisms, viruses, and toxins are examples of pathogens.

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